The carpet on the floor of the Dover Studio suggests the photo was taken after July 1939, but before August 1940 when Frank Nankervis joined the 2nd AIF.
Frank served as a Lieutenant in the 2/29th Australian Infantry Battalion. He became a Prisoner of War on Burma Railway and in Selarang Prison Camp in Chiangi, Singapore. Frank took his oath of enlistment in the AIF on 5/8/1940 at Royal Park and ended his service on 12/2/1946. Active service in Australia of 126 days and overseas in Malaya for 1369 days.
Frank played A Grade Amateur Football with St. Paul's C of E Team in Essendon. He also later trained with Essendon 'Seconds' Football and with Essendon 'Thirds' Cricket. He was both good at batting and as a left arm swing bowler!
If you can identify any other players, please get in touch. See my email in my profile.